Plasma steroid concentrations in relation to the reproductive cycle of cultured male Rhamdia quelen

dc.creatorBarcellos, LJG
dc.creatorWassermann, GF
dc.creatorScott, AP
dc.creatorWoehl, VM
dc.creatorQuevedo, RM
dc.creatorIttzes, I
dc.creatorKrieger, MH
dc.creatorLulhier, F
dc.date2002
dc.dateSEP
dc.date2014-11-18T21:32:11Z
dc.date2015-11-26T17:54:25Z
dc.date2014-11-18T21:32:11Z
dc.date2015-11-26T17:54:25Z
dc.date.accessioned2018-03-29T00:38:04Z
dc.date.available2018-03-29T00:38:04Z
dc.identifierJournal Of Fish Biology. Academic Press Ltd Elsevier Science Ltd, v. 61, n. 3, n. 751, n. 763, 2002.
dc.identifier0022-1112
dc.identifierWOS:000179168400017
dc.identifier10.1006/jfbi.2002.2102
dc.identifierhttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/59909
dc.identifierhttp://www.repositorio.unicamp.br/handle/REPOSIP/59909
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/59909
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1290789
dc.descriptionThe plasma concentrations of testosterone (T) of cultured jundia Rhamdia quelen increased progressively during spermatogenesis and reached a peak at the beginning of spermiation (e.g. fluidization of the sperm and production of milt). Plasma peaks of T occurred simultaneously to the highest production of T by the testis, however, both plasma concentrations an testis production of T decreased progressively during spermiation. Concentrations of 11-ketotestosterone(11-KT) peaked c. 1 month after the peak of T, concomitant with enhanced production of 11-KT by the testis. The concentrations of 11-KT during the first cycle were extremely high (>1 mug ml(-1)), but less during the second and third cycles, suggesting that this steroid is most important during the pubertal phase in male jundia. Plasma concentrations of both 17-hdroxy-4-pregene-3,20-dione (17-P) and 17,20beta-dihydroxy-4-pregen-3-one (17,20beta-P) Were significantly higher during spermiation than at an other times, and showed little variation. The pattern of steroid changes was cyclical and consistent with their proposed roles in male fish reproduction. (C) 2002 Published by Elsevier Science on behalf of The Fisheries Society of the British Isles.
dc.description61
dc.description3
dc.description751
dc.description763
dc.languageen
dc.publisherAcademic Press Ltd Elsevier Science Ltd
dc.publisherLondon
dc.publisherInglaterra
dc.relationJournal Of Fish Biology
dc.relationJ. Fish Biol.
dc.rightsfechado
dc.rightshttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dc.sourceWeb of Science
dc.subjectjundia
dc.subjectRhamdia quelen
dc.subjecttestosterone
dc.subject11-ketotestosterone
dc.subjectpuberty
dc.subjectTrout Salmo-gairdneri
dc.subjectRainbow-trout
dc.subjectSeasonal-variations
dc.subjectSex Steroids
dc.subjectOncorhynchus-kisutch
dc.subjectHormones
dc.subjectMaturation
dc.subjectProfiles
dc.subjectTeleost
dc.subjectTestosterone
dc.titlePlasma steroid concentrations in relation to the reproductive cycle of cultured male Rhamdia quelen
dc.typeArtículos de revistas


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